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The parameters of MOSFET:

Vt=1V
kn'=μCi=0.1[mA/V]
λ=0.02
L=4u
W=20u



Here's the formula for saturation

I don't know where to start and I been thinking what to do for almost 1:30 hours. I tried plugging in the values into the formula and then solving for VG to get the RG values, but that doesnt' work either. What can I do to start solving this problem?
Any help would be appreciated.

 

I guess my question is what's the relationship between RG and ID

 

I guess my question is what's the relationship between RG and ID

From my textbook, section MOSFET Small-Signal Amplifier

"RG establishes the Q-point on the load line.

If we assume that v_in=V_in*sin(wt), the gate-to-source voltage will have a sinusoidal signal superimposed on the dc quiescent value. As the gate-to-source voltage changes over time, the Q-point will move up and down the line.
Moving up and down the load line translates into a sinusoidal variation in the drain current."




So. RG sets up the Q-point. Then everything else oscillates around that point.

 

I guess my question is what's the relationship between RG and ID

(Q1) What's the relationship between Vg and Id?

(Q2) What's the relationship between Rg and Vg?

 

In saturation we use this equation to find Id current

\(\Large I_{D} = \frac{1}{2}\mu_n C_{ox} \frac{W}{L} (V_{GS} - V_{TH})^2(1 + \lambda V_{DS})\)

 

(Q1) What's the relationship between Vg and Id?

(Q2) What's the relationship between Rg and Vg?

Thanks a lot man. I feel pretty stupid now that it was right before me eyes. Thanks again.

 

Thanks a lot man. I feel pretty stupid now that it was right before me eyes. Thanks again.

No need to feel stupid. Sometimes we all need a nudge to see something that right in front of us. I've had more than my share of, "Doh!" moments and I'm sure I will have even more as my senility deepens!